| /* { dg-do compile { target size32plus } } */ |
| /* The desire is to show we can generate a memset from the outer loop |
| store. Both store motion and PRE expose a DSE opportunity for this |
| zeroing - while desirable this defeats the purpose of this testcase. */ |
| /* { dg-options "-O2 -fno-tree-loop-im -fno-tree-pre -ftree-loop-distribution -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */ |
| |
| #define N (1024) |
| double a[N][N], b[N][N], c[N][N]; |
| |
| void |
| foo (void) |
| { |
| unsigned i, j, k; |
| |
| for (i = 0; i < N; ++i) |
| for (j = 0; j < N; ++j) |
| { |
| c[i][j] = 0.0; |
| for (k = 0; k < N; ++k) |
| c[i][j] += a[i][k] * b[k][j]; |
| } |
| } |
| |
| /* { dg-final { scan-tree-dump "Loop nest . distributed: split to 1 loops and 1 library" "ldist" } } */ |
